I’m sorry if you think I’m bringing up debits and credits to confuse you. But one of the things you asked about–or seemed to–was credits on what you called the “starting balances balances report.” The screen shot you showed was of a drill-down on the Starting balances equity account balance from the Summary page, not the Starting Balances report (which is in the Reports tab). Despite your terminology, I addressed your question on the assumption you were referring to credits in the drill-down, explaining why they are credits and where you can find out more about the subject.
I assume you actually mean a purchase invoice, not a purchase order, as a purchase order will have no effect on financials. But you previously said this was a credit, which agrees with your drill-down report. Now you are saying it is a debit. If it is now a debit, you’ve done something besides what you described.
This, too, was a credit before and has become a debit without explanation.
As I explained before, you cannot set starting balances on transactions. So no, not only do you not need to do this, but you cannot do this. If you think you can, you must be referring to something else. Since we cannot see your records or watch what you do, it is very important to use the same terminology as in the program.
That’s why I referred you to the link. Every single thing Manager does depends on debits and credits. And until you understand the fundamentals of them, you will never understand what Manager is doing. You have to understand the objective before you can learn to use any tool.
The sum of assets must equal the sum of liabilities and equity. Every transaction must balance debits and credits. If you enter something incorrectly, Manager is going to take over and make those things true, even though the result is incorrect. The way the program does that is to activate the Starting balance equity account and dump the incorrect transaction there. You may have had a real equity balance on January 1, 2017, but it should have been contained in Capital accounts, or Owner’s equity, or Issued shares, or something similar, depending on your form of legal organization. One of those account might have a starting balance. Then the program would not have intervened and activated Starting balance equity. So I believe what this really goes back to is an incompletely designed chart of accounts.
@Brucanna is right: sort out the balance sheet as of January 1, 2017. Then worry about 2017 transactions. And forget the idea that you are entering or should enter anything in 2016 to “offset” something that happened later in 2017. That’s not what you’re trying to do. You are trying to make your books reflect the position of your organization on January 1 when you started using Manager. After that is in hand, you can record transactions that change that position over the ensuing year.